:root{
  --bg:#f7f2ea;
  --ink:#151b2d;
  --muted:#667085;
  --line:rgba(21,27,45,.10);
  --glass:rgba(255,255,255,.72);
  --shadow:0 30px 90px rgba(55,45,30,.14);
  --accent:#8b5cf6;
  --brand:#151b2d;
  --danger:#e11d48;
  --good:#059669;
}
body.dark{
  --bg:#0b1020;
  --ink:#f8fafc;
  --muted:#9ca3af;
  --line:rgba(255,255,255,.12);
  --glass:rgba(17,24,39,.74);
  --shadow:0 30px 90px rgba(0,0,0,.34);
  --brand:#f8fafc;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 10% 3%,rgba(139,92,246,.14),transparent 28%),
    radial-gradient(circle at 92% 4%,rgba(245,158,11,.15),transparent 26%),
    linear-gradient(180deg,#fbf8f2 0%,#f5f1ea 52%,#f3f6fb 100%);
  min-height:100vh;
}
body.dark{
  background:
    radial-gradient(circle at 10% 3%,rgba(139,92,246,.22),transparent 28%),
    radial-gradient(circle at 92% 4%,rgba(37,99,235,.18),transparent 26%),
    linear-gradient(180deg,#0b1020 0%,#0f172a 100%);
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(21,27,45,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(21,27,45,.032) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(to bottom,black,transparent 72%);
  z-index:-1;
}
a{text-decoration:none;color:inherit}
button,input,textarea,select{font:inherit}
.site-top{
  width:min(1320px,92%);
  margin:28px auto 0;
  min-height:78px;
  padding:14px 18px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--glass);
  backdrop-filter:blur(18px);
  box-shadow:0 18px 60px rgba(70,55,36,.09);
  display:flex;
  align-items:center;
  gap:16px;
  position:sticky;
  top:18px;
  z-index:20;
}
.brand{display:flex;align-items:center;gap:13px;min-width:245px}
.brand-mark{
  width:48px;height:48px;border-radius:18px;
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:22px;
  background:radial-gradient(circle at 30% 22%,rgba(255,255,255,.35),transparent 32%),linear-gradient(135deg,#111827,#2e3750 55%,#8b5cf6);
  box-shadow:0 14px 34px rgba(17,24,39,.22);
}
.brand strong{display:block;font-size:21px;line-height:1.05}
.brand em{display:block;margin-top:4px;color:var(--muted);font-size:12px;font-style:normal;letter-spacing:.12em;text-transform:uppercase}
.top-nav{margin-left:auto;display:flex;gap:8px;align-items:center}
.top-nav a{padding:12px 18px;border-radius:999px;color:var(--muted);font-weight:800;font-size:17px}
.top-nav a.active,.top-nav a:hover{color:var(--ink);background:rgba(255,255,255,.66)}
body.dark .top-nav a.active,body.dark .top-nav a:hover{background:rgba(255,255,255,.08)}
.search-btn,.icon-btn{
  width:50px;height:50px;border-radius:50%;
  display:grid;place-items:center;background:#fff;border:1px solid var(--line);
  box-shadow:0 12px 30px rgba(21,27,45,.08);
  font-size:25px;cursor:pointer;color:#151b2d;
}
body.dark .search-btn,body.dark .icon-btn{background:#111827;color:#f8fafc}
main{width:min(1320px,92%);margin:0 auto}
.hero{display:grid;grid-template-columns:520px minmax(0,1fr);gap:96px;align-items:center;padding:66px 0 38px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;background:rgba(139,92,246,.12);color:#6d28d9;font-size:13px;font-weight:900;letter-spacing:.08em;margin-bottom:22px}
.eyebrow::before{content:"";width:7px;height:7px;background:#8b5cf6;border-radius:50%;box-shadow:0 0 0 5px rgba(139,92,246,.14)}
.hero h1{margin:0;font-size:42px;line-height:1.22;letter-spacing:-.03em;max-width:520px}
.hero h1 span{display:block;white-space:nowrap;background:linear-gradient(135deg,#151b2d,#2b3555 58%,#7c3aed);-webkit-background-clip:text;background-clip:text;color:transparent}
body.dark .hero h1 span{background:linear-gradient(135deg,#fff,#c4b5fd);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{max-width:500px;color:var(--muted);font-size:17px;line-height:1.9;margin:24px 0 0}
.feature-stack-stage{position:relative;min-height:520px;display:flex;align-items:center;justify-content:flex-end;padding:34px 0;isolation:isolate}
.stack-glow{position:absolute;width:86%;height:76%;border-radius:60px;background:radial-gradient(circle at 15% 50%,rgba(139,92,246,.24),transparent 36%),radial-gradient(circle at 75% 40%,rgba(245,165,36,.26),transparent 34%),radial-gradient(circle at 52% 86%,rgba(251,113,133,.16),transparent 30%);filter:blur(20px);opacity:.95;z-index:-2}
.stack-platform{position:absolute;left:4%;right:0;bottom:62px;height:112px;border-radius:50%;background:radial-gradient(ellipse at center,rgba(21,27,45,.18),transparent 64%);filter:blur(4px);transform:rotate(-3deg);z-index:-1}
.cover-stack{position:relative;width:min(760px,100%);height:465px}
.stack-card{position:absolute;top:50%;left:50%;width:245px;height:375px;border-radius:34px;padding:9px;background:linear-gradient(135deg,rgba(255,255,255,.95),rgba(255,255,255,.62));border:1px solid rgba(255,255,255,.76);box-shadow:0 30px 90px rgba(21,27,45,.20);overflow:hidden;transition:.35s ease}
.stack-card img{width:100%;height:100%;object-fit:cover;display:block;border-radius:25px;filter:saturate(1.05) contrast(1.03)}
.stack-card::after{content:"";position:absolute;inset:9px;border-radius:25px;background:linear-gradient(to top,rgba(0,0,0,.58),rgba(0,0,0,.06) 52%,transparent 70%);pointer-events:none}
.stack-card.c1{transform:translate(-152%,-44%) rotate(-13deg); z-index:1}.stack-card.c2{transform:translate(-104%,-49%) rotate(-7deg); z-index:2}.stack-card.c3{width:280px;height:420px;transform:translate(-50%,-53%) rotate(0deg);z-index:5;box-shadow:0 38px 110px rgba(21,27,45,.28)}.stack-card.c4{transform:translate(8%,-49%) rotate(7deg); z-index:3}.stack-card.c5{transform:translate(58%,-44%) rotate(13deg); z-index:1}
.stack-caption{position:absolute;left:50%;bottom:8px;transform:translateX(-50%);z-index:8;width:min(560px,92%);padding:18px 22px;border-radius:28px;background:rgba(255,255,255,.74);border:1px solid rgba(255,255,255,.80);box-shadow:0 20px 70px rgba(21,27,45,.14);backdrop-filter:blur(18px);display:flex;align-items:center;justify-content:space-between;gap:18px}
.stack-caption small{display:block;color:#7c3aed;font-weight:900;letter-spacing:.08em;margin-bottom:5px}.stack-caption strong{display:block;font-size:24px;letter-spacing:-.04em}.stack-caption .count{flex:0 0 auto;padding:12px 15px;border-radius:999px;color:#fff;background:linear-gradient(135deg,#151b2d,#7c3aed);font-weight:900;box-shadow:0 14px 34px rgba(124,58,237,.28)}
.search-panel{display:none;margin-bottom:24px}.search-panel.show{display:block}.search-panel input{width:100%;border:1px solid var(--line);border-radius:24px;padding:18px 22px;background:rgba(255,255,255,.76);outline:none;color:var(--ink)}
body.dark .search-panel input{background:rgba(17,24,39,.8)}
.cats{display:flex;gap:12px;flex-wrap:wrap;margin:6px 0 28px}.cats button{border:1px solid var(--line);background:rgba(255,255,255,.72);border-radius:999px;padding:12px 21px;font-weight:900;color:#1d2842;box-shadow:0 10px 28px rgba(70,55,36,.06);cursor:pointer}.cats button.active{background:#151b2d;color:#fff}
body.dark .cats button{background:rgba(17,24,39,.8);color:#f8fafc}.waterfall{column-count:4;column-gap:22px;padding-bottom:30px}
.gallery-card{break-inside:avoid;display:block;position:relative;margin:0 0 22px;border-radius:30px;overflow:hidden;background:#ddd;box-shadow:0 22px 70px rgba(52,45,36,.13)}
.gallery-card img{width:100%;display:block;transition:.55s ease}.gallery-card:hover img{transform:scale(1.06);filter:saturate(1.08) contrast(1.04)}.gallery-card::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.75),rgba(0,0,0,.08) 48%,transparent 68%)}
.card-top{position:absolute;top:14px;left:14px;right:14px;z-index:2;display:flex;justify-content:space-between}.badge{color:#fff;background:rgba(0,0,0,.36);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:7px 10px;font-size:12px;font-weight:900}
.card-content{position:absolute;left:16px;right:16px;bottom:16px;z-index:2;color:#fff}.card-content h2{margin:0 0 8px;font-size:20px;line-height:1.25;text-shadow:0 3px 18px rgba(0,0,0,.3)}.card-meta{display:flex;justify-content:space-between;color:rgba(255,255,255,.78);font-size:13px}
.post-wrap{width:min(1180px,92%);margin:54px auto}.post-head{margin-bottom:28px}.post-head h1{font-size:clamp(34px,5vw,64px);margin:0 0 12px;letter-spacing:-.05em}.post-head p{color:var(--muted)}.buy-link{display:inline-flex;margin-top:12px;background:#151b2d;color:#fff;border-radius:999px;padding:12px 18px;font-weight:900}
.detail-grid{column-count:2;column-gap:18px}.detail-grid img{width:100%;display:block;margin:0 0 18px;border-radius:28px;box-shadow:var(--shadow)}.back{display:inline-block;margin-bottom:24px;font-weight:900;color:var(--ink)}
.about,.admin-card{margin:54px 0 36px;border:1px solid var(--line);border-radius:28px;padding:28px;background:rgba(255,255,255,.64);box-shadow:0 18px 60px rgba(70,55,36,.08)}
body.dark .about,body.dark .admin-card{background:rgba(17,24,39,.72)}.about h2{margin-top:0}.about p{color:var(--muted);line-height:1.9}.about-page{min-height:60vh}.about-title-row{display:flex;align-items:center;justify-content:space-between;gap:18px}.footer{text-align:center;color:var(--muted);padding:26px 0 46px}

/* Admin */
.admin-layout{width:min(1380px,94%);margin:24px auto 48px;display:grid;grid-template-columns:360px minmax(0,1fr);gap:24px}
.panel{border:1px solid var(--line);border-radius:28px;background:var(--glass);box-shadow:var(--shadow);backdrop-filter:blur(18px);overflow:hidden}.panel-head{padding:22px 24px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-head h2{margin:0;font-size:22px;letter-spacing:-.04em}.panel-body{padding:22px 24px}
.field{display:grid;gap:8px;margin-bottom:16px}.field label{font-weight:900;font-size:14px;color:var(--ink)}.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.76);padding:13px 14px;outline:none;color:var(--ink)}.field textarea{min-height:92px;resize:vertical}
body.dark .field input,body.dark .field textarea,body.dark .field select{background:rgba(17,24,39,.8)}
.hint{font-size:13px;color:var(--muted);line-height:1.6;margin-top:4px}.btn{border:0;border-radius:999px;padding:12px 18px;font-weight:900;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--brand);color:white}.btn-soft{background:rgba(124,58,237,.10);color:#6d28d9}.btn-danger{background:rgba(225,29,72,.10);color:var(--danger)}.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.login-card{width:min(520px,92%);margin:80px auto;border:1px solid var(--line);border-radius:30px;background:var(--glass);box-shadow:var(--shadow);padding:30px}.gallery-list{display:grid;gap:12px}.gallery-item{display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:14px;align-items:center;padding:12px;border:1px solid var(--line);background:rgba(255,255,255,.62);border-radius:20px;cursor:pointer;transition:.2s}.gallery-item.active,.gallery-item:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(55,45,30,.12);border-color:rgba(124,58,237,.28)}
body.dark .gallery-item{background:rgba(17,24,39,.8)}.thumb{width:72px;height:86px;border-radius:16px;overflow:hidden;background:#ddd}.thumb img{width:100%;height:100%;object-fit:cover;display:block}.gallery-info strong{display:block;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.gallery-info span{display:block;color:var(--muted);font-size:13px;margin-top:5px}.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.drop{border:2px dashed rgba(124,58,237,.26);border-radius:24px;background:rgba(255,255,255,.55);min-height:170px;display:grid;place-items:center;text-align:center;padding:22px;cursor:pointer;position:relative;overflow:hidden}.drop input{position:absolute;inset:0;opacity:0;cursor:pointer}.drop strong{display:block;font-size:18px}.drop span{display:block;color:var(--muted);font-size:14px;margin-top:8px;line-height:1.6}
body.dark .drop{background:rgba(17,24,39,.7)}.preview-cover{margin-top:14px;border-radius:22px;overflow:hidden;height:260px;background:#eee;border:1px solid var(--line)}.preview-cover img{width:100%;height:100%;object-fit:cover;display:block}.image-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}.image-card{position:relative;aspect-ratio:3/4;border-radius:18px;overflow:hidden;background:#ddd;border:1px solid var(--line)}.image-card img{width:100%;height:100%;object-fit:cover;display:block}.image-card button{position:absolute;right:7px;top:7px;width:28px;height:28px;border:0;border-radius:50%;background:rgba(0,0,0,.56);color:#fff;cursor:pointer}
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);opacity:0;background:#111827;color:#fff;border-radius:999px;padding:13px 18px;box-shadow:0 18px 60px rgba(0,0,0,.25);transition:.25s;z-index:99}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.hidden{display:none!important}.debug-box{margin:0 0 24px;border:1px solid rgba(124,58,237,.18);border-radius:28px;background:rgba(255,255,255,.72);box-shadow:0 18px 60px rgba(70,55,36,.08);overflow:hidden}.debug-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.debug-head h2{margin:0;font-size:20px;letter-spacing:-.03em}.debug-body{padding:18px 22px}.debug-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:14px}.debug-item{border:1px solid var(--line);border-radius:18px;padding:14px;background:rgba(255,255,255,.66)}.debug-item b{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.debug-item span{font-weight:900;word-break:break-all}.debug-ok{color:#059669}.debug-bad{color:#e11d48}.debug-warn{color:#b45309}.debug-log{white-space:pre-wrap;background:#111827;color:#e5e7eb;border-radius:18px;padding:16px;overflow:auto;max-height:260px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:13px}
@media(max-width:1100px){.hero{grid-template-columns:1fr;gap:28px}.feature-stack-stage{justify-content:center}.waterfall{column-count:3}.admin-layout{grid-template-columns:1fr}.editor-grid{grid-template-columns:1fr}.debug-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.site-top{border-radius:28px;height:auto;flex-wrap:wrap}.top-nav{order:3;width:100%;overflow:auto;margin-left:0}.brand{min-width:0}.hero h1{font-size:34px}.waterfall{column-count:2}.detail-grid{column-count:1}.image-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.waterfall{column-count:1}.stack-caption{align-items:flex-start;flex-direction:column}.gallery-item{grid-template-columns:60px 1fr}.gallery-item .btn{grid-column:1/-1}.debug-grid{grid-template-columns:1fr}}
.watermark-page{position:fixed;inset:0;z-index:80;overflow:auto;background:var(--bg);padding:24px}
.watermark-wrap{width:min(1380px,94%);margin:0 auto}
.watermark-layout{display:grid;grid-template-columns:360px minmax(0,1fr);gap:24px;align-items:start}
.watermark-layout aside{position:sticky;top:18px;max-height:calc(100vh - 60px);overflow:auto}
.watermark-preview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.watermark-card{border:1px solid var(--line);border-radius:22px;overflow:hidden;background:rgba(255,255,255,.72);box-shadow:0 10px 30px rgba(0,0,0,.06)}
.watermark-card-head{padding:10px 12px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:8px}
.watermark-card-head strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.watermark-stage{padding:10px;background:rgba(248,250,252,.72)}
.watermark-stage canvas{display:block;width:100%;height:auto;border-radius:16px;background:#ddd;touch-action:none;cursor:grab}
@media(max-width:900px){.watermark-layout{grid-template-columns:1fr}.watermark-layout aside{position:relative;top:0;max-height:none}}